Specifications

304 Chapter 8. Command Reference
SDSL Commands
The commands in this section manage the Symmetric Digital Subscriber Line (SDSL) link for an SDSL router.
¥ sdsl preact Disables or re-enables autobaud pre-activation.
¥ sdsl speed Displays and sets the line speed.
¥ sdsl stats Displays and clears SDSL statistics.
¥ sdsl terminal Redefines the router as CO equipment.
Line activation
Line activation is independent of network settings. During activation, the Link light (on the front panel of the
router) is first yellow and then turns green when the link becomes active. The WAN light should turn yellow,
then green, when the link has activated.
If auto-speed detection was turned off for the line (sdsl speed noauto), the Link light is amber when the line
tries to activate.
The ifs command displays the Link as either off or opened when it has successfully activated. The following
is a sample output.
Line speed
In general, the line activates at the speed it was last activated. The line speed can be changed by several
means depending on the router model. One way is by setting the speed manually with an sdsl speed
command.
In general, if the speed is not set otherwise, the router at the CPE end will try auto-speed detection (unless it
has been disabled).
Auto-speed detection attempts to activate the line at different speeds (for about 30 seconds per speed) until
the line is activated. The following is output from a successful activation.
03/09/1998-17:11:59:SDSL: Deactivated
03/09/1998-17:12:22:SDSL: CPE is Activating at 768 Kb/s
03/09/1998-17:13:00:SDSL: Deactivated
03/09/1998-17:13:01:SDSL: CPE is Activating at 1152 Kb/s
03/09/1998-17:13:32:SDSL: Deactivated
03/09/1998-17:13:32:SDSL: CPE is Activating at 1152 Kb/s
03/09/1998-17:14:11:SDSL: Deactivated
03/09/1998-17:14:12:SDSL: CPE is Activating at 384 Kb/s
03/09/1998-17:14:51:SDSL: Activated
03/09/1998-17:14:53:FRAMER: The framer is synchronized
03/09/1998-17:15:19:DOD: connecting to co @ 0*38 over ATM-VC/1
Sample:
ifs
Interface Speed In % Out % Protocol State
Connection
ETHERNET/0 10.0mb 0%/0% 0%/0% (Ethernet) OPENED
SDSL/0 384kb 0%/0% 0%/0% (ATM) OPENED
CONSOLE/0 9600 b 0%/0% 0%/0% (TTY) OPENED